Display rack



FIG. 1 is a top, front, and left side perspective view of a display rack showing our new design on an enlarged scale;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design of a display rack, as shown and described. 